$600+ with $25k down seems off, but who knows.
MSRP=$73k
Residual=$43k
difference = $30k
minus down of $25k
=$5k of depreciation over term of lease

Leaving $5k of depreciation (if you paid MSRP), plus interest on $48k ($73-$25) for two years at say 5% should be about $4800 totL plus $5k of depreciation = $9,800/24 or about $400/month.

You must have rolled negative equity from another car into the lease or paid over MSRP when you bought it of $600+ minus $400 x 24 or $4,800+ of "extra" profit to the dealer or expense.

If you are asking for $10k upfront plus $600 month for 8-9 months, that is equal to $1,711 to 1,850 month for the remaining term of the lease (but I guess a $43k buyout at the end will likely have some value in 8-9 months as I would guess a '09 MDCT will be trading for more than that next fall)

all i have to say is wow! lol...yeah, I mean it may be a little difficult to get 10k back, but I figure someone who want's to lease an e92 for now, and buy it at the end of the lease it may seem worthit to them...I mean I don't have to get exactly 10k, but something reasonable, considering it would mean i'm only selling the car for a total of 58k, with the residual being at 43k at the end of the 8 months.